# Question

Eighty pilots were tested in a flight simulator and the time for each to take corrective action for a given emergency was measured in seconds, with the following results:

Construct a frequency distribution of these data.

Construct a frequency distribution of these data.

## Answer to relevant Questions

Find the class boundaries, the class interval, and the class marks of the frequency distribution constructed in Exercise 3.115. In exercise Construct a percentage distribution using the drying- time data of Exercise 3.115. In exercise If X has the distribution function Find (a) P(X ≤ 3); (b) P(X = 3); (c) P(X < 3); (d) P(X ≥ 1); (e) P(- 0.4 < X < 4); (f) P(X = 5). The probability density of the random variable Y is given by Find P(Y < 3.2) and P(2.9 < Y < 3.2). Find the distribution function of the random variable X whose probability density is given by Also sketch the graphs of the probability density and distribution functions.Post your question

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